Vacuum cleaning-machine.



0. BRAKE.'

VACUUM CLEANING MACHINE. APPLIGATION FILED 11037.25, 1910.

Patented Aug. 15, 1911.

v fl'r'rs.

narran erases rarnrrr caricia.. V

one Daarin, or CLEVELAND, omo.

"VACUUM CLEANIiG-MACHINE.

Lacasse.

Speecation of Letters Patent. Patented Aug, 15, 191 l application filed .November 25. 1910. Serial No. 594,127.`

.o all whommay concern:-4

Be it known that I, ORA DRAKE, a citizen of the United States, residing at Cleveland,

in the county of Cuyahoga and Sit/ate of Ohio, have invented certain new and useful Improvements '1n Vacuum Cleaning- Ma? chines, of which the following is a specitication.

This invention relates to a dustcollecting tool or, shoe, so-called for vacuum cleaningv machines, all substantially as shown and described and particularly pointed out in the claims,

In the accompanying drawings, Figure l is a side elevation of the machine partly in section, and Fig. 2 is a plan view of the tool or shoe used therewith.

Heretofore, so far as l have observed, it a "shoe was unduly lengt-hened it would invariably show lack of dra'tt or suction toward o'r at its extremities and this regardless of the degree ot' suction maintained, whether greater or less, but the present shoe is just as elllcient at its ends as at its middle. At any rate l can pick upa pin or needle or' lint or other such ditlicult object to litt as easily and surely at the ends of the tool as atlihe middle, and so tar as l can sce there is 4no difference in these particulars. Now, the

construction of shoe or tool Swhich gives this very desirable result with the large reach or sweep over the floor surface which it all'ords is shown as member S. ln plan view the said shoe is shown as lozenge shape,

or something like a double pointed flat iron both 1n plan and side elevation, withr end portions ot substantially V shape from the middle to each end, and for that matter a substantially elliptical shape is suggest-ed in 40 its plan appearance, particularly, while the y depth trom top to bottom is'uniilormly about one inch and possibly a fraction over in a full sized shoe. Both 'top and bottom are, therefore, .substantially fiat and the slot Q '45 runs lengthwise from end to end in said bottom and is say three-eighths ot an inch across. lf the eXtreme length of the shoe be say ten inches. the width across .its middle will be about tive inches. and itl the length '50 be twelve inches the craitrabwidth will be proportional width must go with a certain thence to slot 2.

length to get tne desired results. At thc top and center the shoe has a circular hole or and the circle 8 somewhat defines the outerl radius ot whirl or cnfcular movement of theair in its spiral trail to hole 3 from all portions of slot 2. The same effect, however, is felt to t-he very ends of the slots. Suction occurs in the shoe all about hole 3, but with the slot 2 lengthwise beneath and across said,

hole through which the air-is drawn there is at least such modification of the action as to produce a. rotary movement of the air with the radius ot suction extended to the extremes of said slot in a well sustained pull.

rlhis distril'iutes the pull or suction of the blower uniformly within the shoe which dis- 'tribution could not occur it the interior chamber oit the shoewere not widened and deepened substantially as shown at its niiddle and which causes the draft to be eXer* cised directly upon the air in the shoe and. rThe air therefore enters through said slot by exhaustI from the air chamber ot` theV shoe rather than being reached directly by suction from the blower, the said chamber breaking the suction connection with a space large enough to afford an eddy which ,itself issues in the opening 3.

Bv making the shoev with a pointed nose I can also reach corners and ditlicult places to be cleaned more easily than would otherwise be possible.

The broad smooth surface of the shoe enables it to slide easily over a carpet or rug. and tor hard wood floors a felt mitten or the like. can bc drawn over each point for a short distance to avoid direct contact ot' the metal with the wood.

The entire 'weight oi" the blower and motor parts comes centrally upon shoe S, being` located centrally in respect thereto. The widest part oiC the .shoe is substantially equal to the diameter ot' thel blower casing, whereas the length thereof is obviously greater.

The shoe therefore provides a 'broad flat base or rest of exceptional stability for the device independent of any other support.

I claim:

1. A vacuum cleaning device having an internal chamber of substantially equal depth throughout and of substantially 1ozenge shape and provided with a. slot length- Wise centrally in its bottom and an exhaust in its top.

v 2. A vacuum ,cleaner comprising a'shoe having substantially VV shaped portions from its middle to its ends and provided with a'slot centrally in its bottom and an opening in its top, in combination with suc- 15 tion means adapted to draw the dust through said shoe.

' In testimony whereof I alix my signature in the presence of two Witnesses.

ORA BRAKE.

Witnesses:

M. J. CREGAN, THOMAS EGAN. 

